Nonstick Material for Multilayer PCB Subportion Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for producing multilayer printed circuit boards require complex preconfectioning and high operational expenditures due to the need for adhesive foils or separation foils to prevent adhesion between material layers, which complicates the removal of subportions and affects miniaturization and registration accuracy.
Innovation Solution
An anti-adhesion material with a difference in polarity relative to the adjoining material layers, comprising a separation component, binder, and solvent, such as hydrocarbon waxes and oils, is applied to prevent adhesion, allowing for simple and reliable removal of subportions without the need for preconfectioning, using techniques like screen-printing and laser-cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive foils or separation foils are used to prevent adhesion between material layers, then the removal of subportions is enabled, but the production complexity and operational expenditures increase due to the need for preconfectioning and high precision registration
Solution Approach 1:
The invention extracts the anti-adhesion function from complex preconfectioned foils and implements it through a simple liquid or paste application that is applied directly to the bonding surface. This eliminates the need for separate adhesive foils and complex registration systems, while still enabling reliable subportion removal through the polarity difference mechanism
Solution Approach 2:
The invention changes the physical-chemical parameters of the bonding interface by applying a liquid or paste with different polarity characteristics. This parameter change creates a bond-free area that prevents adhesion in specific regions, enabling subportion removal without requiring complex structural modifications or preconfectioning
2Reliability
If preconfectioned foils are used to ensure adhesion in specific regions, then the bonding reliability is improved, but the registration accuracy requirements and operational expenditures increase
Solution Approach 1:
The invention introduces a liquid or paste intermediary substance that mediates the bonding process. This intermediary is applied in specific patterns to create adhesion zones and non-adhesion zones, eliminating the need for precise mechanical registration of preconfectioned foils while maintaining bonding reliability through controlled chemical interaction
Solution Approach 2:
The invention uses polarity parameter differences between the liquid/paste and the material layers to control bonding behavior. By changing the polarity characteristics in specific regions, the invention creates reliable bonding areas and removable areas without requiring high precision mechanical registration
3Reliability
If complex preconfectioning methods are used to enable subportion removal, then the removal function is achieved, but the production time and operational expenditures increase
Solution Approach 1:
The invention performs preliminary action by applying the liquid or paste anti-adhesion substance before the bonding process. This preliminary application creates the necessary bond-free areas in advance, eliminating the need for subsequent complex removal operations or preconfectioning steps, thereby reducing overall production time
Solution Approach 2:
The invention extracts the anti-adhesion function from complex multi-step preconfectioning processes and implements it through a single liquid or paste application step. This extraction simplifies the production process and reduces operational expenditures while maintaining the subportion removal capability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach simplifies the production and processing of multilayer structures by eliminating the need for preconfectioning, enabling precise and reliable removal of subportions with reduced operational complexity and improved registration accuracy, facilitating miniaturization and thin layer thicknesses in printed circuit boards.
Implementation Method 1
an anti-adhesion or nonstick material (8, 21) comprising a difference in polarity relative to the adjoining substantially flat material layers (20, 22, 23)
Data Source
AI summary
The invention relates to a nonstick material for use during removal of a part (11) of a substantially planar material layer (2) which is connected in a connecting step to at least on further, substantially planar material layer (9). According to the invention, the nonstick material (8) has a different polarity than the adjoining, substantially planar material layers (2, 9). The invention also relates to a method for removing a part (11) of a substantially planar material layer (2) which is connected in a connecting step to at least one further, substantially planar material layer (9), to a multilayer structure which consists of at least two substantially planar material layers (2, 9) to be interconnected, and to a use of the same, especially in a multilayer printed circuit board.